Self-cleaning salt mist processing equipment and method
Technical field
The present invention relates to a kind of self-cleaning salt mist processing equipment and method, belong to electric power protective equipment field.
Background technique
Oversea wind power generation is because aboundresources, wind speed are stable, the advantages such as the negative effect of environment is little are become the object of paying close attention to of Wind Power Generation.But offshore wind generating is because the particularity of its running environment, long-term work is in the environment of moist and saliferous, the cabin can't be fully airtight in addition, and below deck equipment can be subject to the erosion of marine atmosphere, salinity, the seawater spittle, sleet and lasting doing/wet alternate circulation.Wherein marine atmosphere middle and high concentration salt fog is the greatest factor that causes equipment corrosion.Salt fog has directly affected the environmental suitability of offshore wind generating, the reliability of use and the life-span of unit to the corrosion of cabin body and equipment thereof, reduces its sea survival ability.High salt fog condition mainly causes the adverse effect of three aspects: to equipment: the corrosion that produces the acid/aqueous slkali that forms after electrochemical corrosion, acceleration stress corrosion and salt ionize in water; Because electronics damage, insulating material and metal erosion that mineralization causes; The active part of mechanical part and assembly blocks or bonding, cause enamelled coating foaming etc. by electrolysis.
Equipment in the wind generating set engine room; because crucial large parts, nucleus equipment are numerous; narrow space; so that safeguard very difficult; more crucial is that at sea large parts reliable operation is the key that guarantees unit high usage, economical operation; offshore wind turbine part replacement cost is very expensive, protects its reliable operation, long lifetime particularly for important.Although the corrosion protection research of equipment had obtained larger progress under the high salt fog condition in recent years, the design of anti-salt fog system also has relevant technology to emerge in large numbers, salt fog resistant system for wind generating set at sea such as patent ZL201010111832.2 proposition, a kind of salt mist ventilation filter system that patent ZL201020220114.4 proposes etc., although these technology have solved the ventilating problem of anti-salt fog, but all do not consider the self-cleaning of Filters, and the device of anti-salt fog all only has simple filter to filter, the redundancy of anti-salt fog is not high, for the offshore wind power system that is applicable to the high-altitude, because its installation and maintenance are inconvenient, greatly increased the maintenance cost of equipment.Guaranteeing on the basis that good anti-salt fog ventilates how to make filter material regeneration and guarantee that the highly redundant degree of anti-salt fog system is the key issue that anti-salt fog ventilation equipment design needs to be resolved hurrily.
Summary of the invention
The purpose of this invention is to provide a kind of regulating power is strong, maintenance is little, reliability is high, energy consumption is low self-cleaning salt mist processing equipment and method.
A kind of self-cleaning salt mist processing equipment is characterized in that: be comprised of anti-salt fog ventilation main system, self-cleaning distillation system, cooling unit; Wherein anti-salt fog ventilation main system comprises primary filter, secondary filter, mouth spray, vaporizer, blower fan successively; Also comprise the water receiving disc that is positioned at the mouth spray below; Wherein self-cleaning distillation system comprises the secondary distillation case that links to each other with water receiving disc by return pipe successively, by distilling tube and the fresh-water tank that secondary distillation case links to each other, also comprise the filter, water pump, stop valve, fresh water water pipe, the regeneration shower nozzle that link to each other with fresh-water tank successively; Wherein in the secondary distillation case heater is installed; Also comprise for detection of the differential pressure pickup of pressure reduction before and after the secondary filter and the end solenoid valve that the other end links to each other with the shower nozzle of regenerating that links to each other with differential pressure pickup; The spray of above-mentioned anti-salt fog ventilation main system also links to each other with fresh-water tank by the fresh water water pipe; Wherein cool off unit successively by forming with compressor, condenser, expansion valve that evaporator outlet links to each other successively, the outlet of expansion valve links to each other with above-mentioned evaporator.
Utilize the processing method of described self-cleaning salt mist processing equipment, it is characterized in that comprising following process: when system started working, blower fan was opened, and begins to bleed from external environment, outer gas stream at first by primary filter, is tentatively removed large particle salt fog and impurity in the air; Secondly by secondary filter, further remove airborne salt fog and impurity; Again enter bathing room, distilled water sprays through mouth spray, mixes salt residues in the scavenging air with air; Last air stream is through the evaporator cools desalination that dehumidifies because the pumping action of blower fan, air in the cabin is sent in the air channel, thereby prevent that salt fog from entering the cabin and keeping malleation in the cabin, the water of condensation of spraying water and cooling and dehumidifying is collected by water receiving disc; Water in the water receiving disc enters secondary distillation case by return pipe, because the boiling point of water is lower than the boiling point of salt, the moisture in the brackish water is continuous vaporization under the heat effect of heater, and water vapour enters fresh-water tank by distilling tube, thereby realizes the purpose of distillation; Water in the fresh-water tank under the driving of water pump, flow through successively filter, water pump, stop valve, and be assigned to mouth spray by the fresh water water pipe, the fresh water water pipe also is assigned to the regeneration shower nozzle through the solenoid valve of pressure difference sensor control; Differential pressure pickup is measured the front and back pressure reduction of secondary filter, default pressure difference, and after pressure difference arrived this value, solenoid valve was opened, and this moment, self-cleaning function was opened, and secondary filter is cleaned in the work of regeneration shower nozzle; Refrigeration working medium temperature behind the vaporizer of flowing through raises, liquid-gas phase transition occurs, after the compressed machine compression, become the gas of High Temperature High Pressure, the condenser generation gas-liquid phase transition of flowing through, the highly pressurised liquid after the phase transformation by expansion valve throttling cooling after, enter the vaporizer refrigeration, so circulation realizes that cooling and dehumidifying is except salt functional repeatedly.
If also be connected with the primary distillation case between above-mentioned water receiving disc and the secondary distillation case, above-mentioned condenser is installed in this primary distillation case; Water in the water receiving disc is introduced into the primary distillation case, enters secondary distillation case behind the heat that the brackish water absorptive condenser in the primary distillation case discharges again.Condenser just heats brackish water, and brackish water just enters secondary distillation case after the heating through condenser, is further heated by heater, makes moisture vaporization wherein.The heater of condenser liberated heat and self-cleaning distillation system is jointly for self-cleaning distillation system provides heat in the above-mentioned cooling system, and takes full advantage of the heat of cooling system, energy efficient.
The air quantity of blower fan can be according to different infields, use season and actual security level specifically regulate, and the cold that provides of vaporizer also can be regulated and control as required, thereby realize the control of malleation value and temperature in the cabin.
Compare with existing anti-salt fog ventilation system, the processing method of the self-cleaning salt mist processing equipment that the present invention relates to is finished the cleaning to filter filtration material automatically, and is provided with vaporizer at the fans entrance place, the air of processing is carried out cold again, guarantee that its water content and salinity are lower than design point.The present invention has that regulating power is strong, maintenance is little, reliability is high, low power consumption and other advantages.
Description of drawings
Fig. 1 is not for reclaiming the systematic schematic diagram of condenser heat radiation;
Fig. 2 is schematic diagram of the present invention;
Label title among the figure: 1. primary filter, 2. secondary filter, 3. regeneration shower nozzle, 4. solenoid valve, 5. differential pressure pickup, 6. mouth spray, 7. fresh water water pipe, 8. filter, 9. water pump, 10. vaporizer, 11. blower fans, 12. water receiving discs, 13. return pipe, 14. distilling tubes, 15. fresh-water tanks, 16. primary distillation casees, 17. heater, 18. condensers, 19. expansion valves, 20. refrigeration working mediums, 21. compressor, 22. stop valves, 23. level distillation casees.
Embodiment
As shown in Figure 2, a kind of self-cleaning salt mist processing equipment of the present invention and method comprise primary filter 1, secondary filter 2, regeneration shower nozzle 3, solenoid valve 4, differential pressure pickup 5, mouth spray 6, fresh water water pipe 7, filter 8, water pump 9, vaporizer 10, blower fan 11, water receiving disc 12, return pipe 13, distilling tube 14, fresh-water tank 15, primary distillation case 16, heater 17, condenser 18, expansion valve 19, refrigeration working medium 20, compressor 21, stop valve 22, secondary distillation case 23.
When system started working, blower fan 11 was opened, and begins to bleed from external environment, and outer gas stream at first by primary filter 1, is tentatively removed large particle salt fog and impurity in the air; Secondly by secondary filter 2, further remove airborne salt fog and impurity; Again enter bathing room, distilled water mixes salt residues in the scavenging air through mouth spray 6 ejections with air; Last air stream is through vaporizer 10 cooling and dehumidifying desalinations, because the pumping action of blower fan 11, air prevents that salt fog from entering the cabin and keeping malleation in the cabin in the cabin is sent in the air channel.
The water of condensation of spraying water and cooling and dehumidifying is collected by water receiving disc 12; Water in the water receiving disc 12 enters primary distillation case 16 by return pipe 12, enter secondary distillation case 23 behind the heat that brackish water absorptive condenser 18 in the primary distillation case 16 discharges, because the boiling point of water is lower than the boiling point of salt, moisture in the brackish water is continuous vaporization under the heat effect of heater 17, water vapour enters fresh-water tank 15 by distilling tube 14, thereby realizes the purpose of distillation; Water in the fresh-water tank 15 under the driving of water pump 9, the filter 8 of flowing through successively, water pump 9, stop valve 22, and be assigned to mouth spray 6 by the fresh water water pipe, fresh water water pipe 7 also is assigned to regeneration shower nozzle 3 through the solenoid valve 4 of pressure difference sensor 5 controls; Differential pressure pickup 5 is measured the front and back pressure reduction of secondary filter 2, default pressure difference, after pressure difference arrives this value, solenoid valve 4 is opened, this moment, self-cleaning function was opened, 3 work of regeneration shower nozzle, and distilled water washes away secondary filter 2 filter screens, remove adhering to its surperficial salt fog and impurity particle, thereby increase its filter efficiency and prolong its working life.
Refrigeration working medium 20 raises in the vaporizer 10 rear temperature of flowing through, liquid-gas phase transition occurs, after compressed machine 21 compressions, become the gas of High Temperature High Pressure, the condenser 18 of flowing through, with thermal release to primary distillation case 16 after, gas-liquid phase transition occurs, and the highly pressurised liquid after the phase transformation enters vaporizer (10) refrigeration after lowering the temperature by expansion valve 19 throttlings, so circulation realizes that cooling and dehumidifying is except salt functional repeatedly.Require down at different occasion and the different security level installed and used, the refrigerating capacity of cooling machine set can be according to cabin salt fog and temperature demand for control free adjusting.
Compare with existing anti-salt filtration system, the anti-salt fog effect of self-cleaning salt mist processing equipment of the present invention and method by filter filter, fresh water spray, cooling and dehumidifying desalination guarantee that comprehensively redundancy is high, system's operation is more reliable; System reclaims the condenser heat when operation, energy consumption is low; In addition, native system possesses self-cleaning system, has reduced maintenance and operating cost, and the design of protecting for marine electronic equipment provides new visual angle and new approaches.